<!DOCTYPE html>
<html lang="zh-CN">
    <head>
        <meta charset="UTF-8" />
        <title>1.练习</title>
        <style>
            .name{
                font-size: 25px;
            }
        </style>
    </head>
    <body>
        <div id="root"></div>

        <script src="../day01/lib/react.development.js"></script>
        <script src="../day01/lib/react-dom.development.js"></script>
        <script src="../day01/lib/babel.js"></script>

        <script type="text/babel">
            const commentList = [
        {
          id: 1,
          name: "jack",
          content: "rose, you jump i jump",
          time: "03:21",
        },  
        {
          id: 2,
          name: "rose",
          content: "jack, you see you, one day day",
          time: "03:22",
        },
        { id: 3, name: "tom", content: "jack,。。。。。", time: "03:23" },
      ];

      //高阶函数:执行函数返回值是一个新函数
      //利用高阶函数可以给内部函数传参
      const handleClick = (comment) => {
        return () => {
            alert (comment.time);
        }
      }
      

        let element;
        if(commentList.length){
             element = <ul>
                {
                   commentList.map(comment => {
                    return 
                        <li key = {comment.id}>
                        <h3 className='name'>{comment.name}</h3>
                        <p style = {{fontSize:20 }}
                            onClick = {handleClick(comment)}
                            >{comment.content}
                        </p>
                        </li>
                   })
                }
                </ul>;
            }else {
                element = <h1>暂无评论</h1>
            }

            ReactDOM.createRoot(document.getElementById('root')).render(element);
        </script>
    </body>
</html>